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DOI	10.1016/j.precamres.2016.09.005
	Neoproterozoic granitoids in the eastern Himalayan orogen and their tectonic implications
	Ding, Huixia; Zhang, Zeming
通讯作者	Zhang, ZM (通讯作者)
发表日期	2016
ISSN	0301-9268
EISSN	1872-7433
起始页码	1
结束页码	9
卷号	285
英文摘要	The Precambrian component and evolutionary history of the Greater Himalayan Sequence (GHS), forming the core of the Himalayan orogen, remain a subject of debate. Here, we report new geochronological and petrochemical data of the Neoproterozoic granitoids that occur as the orthogneisses of the GHS in Cona area, the eastern Himalaya orogen. The zircon U-Pb dating results reveal that these granitoids have crystallization ages of Neoproterozoic of 817-838 Ma, and metamorphic ages of ca. 31 Ma. The petrochemical data show that the granitoids are medium to high-K, peraluminous granodiorite and granite, display geochemical affinities with volcanic arc granitoids. The zircon Hf isotopic compositions show that the granitoids were probably derived from the partial melting of Paleoproterozoic crustal materials. These data, combined with previous results, indicate that an extensive Neoproterozoic magmatic belt may have existed in the Himalayan orogen, and that the Neoproterozoic granitoids resulted from the Andean type orogeny that formed along the northwestern margin of Rodinia supercontinent, and experienced the Cenozoic high-grade metamorphism during the Himalayan orogeny. (C) 2016 Elsevier B.V. All rights reserved.
关键词	U-PB ZIRCON SOUTHERN TIBET BREAK-UP WESTERN MARGIN PAN-AFRICAN GEOCHEMICAL EVIDENCE CONTINENTAL ARC MAGMATIC EVENT INDIAN MARGIN YANGTZE BLOCK
英文关键词	Neoproterozoic granitoids; Cenozoic metamorphism; The eastern Himalayan orogen; Rodinia; Andean-type orogeny
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000386404500001
来源期刊	PRECAMBRIAN RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258654
推荐引用方式 GB/T 7714	Ding, Huixia,Zhang, Zeming. Neoproterozoic granitoids in the eastern Himalayan orogen and their tectonic implications[J]. 中国科学院青藏高原研究所,2016,285.
APA	Ding, Huixia,&Zhang, Zeming.(2016).Neoproterozoic granitoids in the eastern Himalayan orogen and their tectonic implications.PRECAMBRIAN RESEARCH,285.
MLA	Ding, Huixia,et al."Neoproterozoic granitoids in the eastern Himalayan orogen and their tectonic implications".PRECAMBRIAN RESEARCH 285(2016).